The sound comes from Donald's Double Trouble, a Donald Duck cartoon released in 1946, where this kind of elastic, cartoonish effect was used to sell exaggerated physical comedy. At the time, animators relied on short musical and sound effects to make bounces, stretches and mishaps feel larger than life, and this pluck fits that tradition perfectly. It later found a second life online, where editors lift brief cartoon sounds for memes, reaction clips and short-form videos. Its short length and instantly silly tone keep it useful decades later.